We have arrived at the point in Mass where the Priest calls us to lift up our hearts and we respond by lifting them up to the Lord. But what are we, in fact, offering up to God? In this teaching we explore the answer to this question. The focus of this session is on the understanding of the Sursum Corda, the praise and thanksgiving offering within the Preface, and the eternal hymn offered to God in heaven and on earth that has been and will be sung throughout eternity…the Sanctus, “Holy, Holy, Holy, Lord God of Hosts. Heaven and earth are full of Thy glory.”